/*
 * Copyright (c) 2010 Mathew Hall, University of Sheffield.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * Neither the name of the University of Sheffield nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
package gpinterpreter.stack;
import gpinterpreter.Instruction;
import gpinterpreter.stack.StackSymbol;
import static gpinterpreter.stack.StackSymbol.*;

/**
 * Represents a single modification of a clustering.
 * @author mat
 *
 */
public class StackInstruction extends Instruction {
	private StackSymbol type;
	private int operand;
	
	public StackInstruction(StackSymbol t, int operand){
		this.type = t;
		this.operand = operand;
	}
	
	public StackInstruction(StackSymbol t){
		
		this(t,0);
	}

	public StackInstruction clone(){
		return new StackInstruction(type,operand);
	}
	
	public StackSymbol getType(){
		return type;
	}
	public int getOperand() {
		return operand;
	}
	public void setOperand(int operand) {
		this.operand = operand;
	}

	public void setType(StackSymbol t) {
		type = t;
		
	}
	
	public String toString(){
		return String.format("%s %d", type, operand);
	}
	
}
